[artifacts] Merge docker context verification (#129399)

* [artifacts] Merge docker context verification

* add to pipeline

* n2-2

(cherry picked from commit b2b961e)

.buildkite/pipelines/artifacts.yml

@@ -24,3 +24,9 @@ steps:
     agents:
       queue: n2-4-virt
     timeout_in_minutes: 20
+
+  - command: .buildkite/scripts/steps/artifacts/docker_context.sh
+    label: 'Docker Build Context'
+    agents:
+      queue: n2-2
+    timeout_in_minutes: 20

.buildkite/scripts/steps/artifacts/docker_context.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -euo pipefail
+
+.buildkite/scripts/bootstrap.sh
+
+if [[ "${RELEASE_BUILD:-}" == "true" ]]; then
+  VERSION="$(jq -r '.version' package.json)"
+  RELEASE_ARG="--release"
+else
+  VERSION="$(jq -r '.version' package.json)-SNAPSHOT"
+  RELEASE_ARG=""
+fi
+
+echo "--- Create contexts"
+mkdir -p target
+node scripts/build "$RELEASE_ARG" --skip-initialize --skip-generic-folders --skip-platform-folders --skip-archives --docker-context-use-local-artifact
+
+echo "--- Setup default context"
+DOCKER_BUILD_FOLDER=$(mktemp -d)
+
+tar -xf target/kibana-[0-9]*-docker-build-context.tar.gz -C "$DOCKER_BUILD_FOLDER"
+cd $DOCKER_BUILD_FOLDER
+
+buildkite-agent artifact download "kibana-$VERSION-linux-x86_64.tar.gz" . --build "${KIBANA_BUILD_ID:-$BUILDKITE_BUILD_ID}"
+
+echo "--- Build context"
+docker build .